| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for improving convenience to a user who uses a karaoke machine. SOLUTION: A sub-CPU 6 when not receiving an answer signal from a main CPU 7 within a predetermined prescribed time (S401) judges that trouble occurs to the main CPU 7 and sends a reset signal to the main CPU to restart the main CPU 7. The sub-CPU 6 sends a predetermined confirmation signal to the main CPU 7 to judge whether the restart of the main CPU 7 is completed (S403). On receiving an answer signal from the main CPU 7, the sub-CPU 6 confirms that the restart is completed (S404). COPYRIGHT: (C)2005,JPO&NCIPI
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